Java Doc for ReferenceEntityLockService.java in  » Portal » uPortal_rel-2-6-1-GA » org » jasig » portal » concurrency » locking » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » uPortal_rel 2 6 1 GA » org.jasig.portal.concurrency.locking   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.jasig.portal.concurrency.locking.ReferenceEntityLockService ReferenceEntityLockService public class ReferenceEntityLockService implements IEntityLockService(Code) author:    Dan Ellentuck version:    $Revision: 35550 $ Constructor Summary public   ReferenceEntityLockService()      ReferenceEntityLockingService constructor comment. Method Summary public  void convert(IEntityLock lock, int newType)      Attempts to change the lock's lockType to newType. public  void convert(IEntityLock lock, int newType, int newDuration)      Attempts to change the lock's lockType to newType. public  boolean existsInStore(IEntityLock lock)      Answer if this IEntityLock exists in the store. public  boolean isValid(IEntityLock lock)      Answers if this IEntityLock represents a lock that is still good. public  IEntityLock newLock(Class entityType, String entityKey, int lockType, String owner)      Returns a lock for the entity, lock type and owner if no conflicting locks exist. public  IEntityLock newLock(Class entityType, String entityKey, int lockType, String owner, int durationSecs)      Returns a lock for the entity, lock type and owner if no conflicting locks exist. Parameters:   entityType - Parameters:   entityKey - Parameters:   lockType - Parameters:   owner - Parameters:   durationSecs - org.jasig.portal.groups.IEntityLock exception:   LockingException - Retrieves potentially conflicting locks and checks them before addingthe new lock to the store. public  IEntityLock newLock(EntityIdentifier entityID, int lockType, String owner)      Returns a lock for the entity, lock type and owner if no conflicting locks exist. public  IEntityLock newLock(EntityIdentifier entityID, int lockType, String owner, int durationSecs)      Returns a lock for the entity, lock type and owner if no conflicting locks exist. public  void release(IEntityLock lock)      Releases the IEntityLock. public  void renew(IEntityLock lock)      Extends the expiration time of the lock by some service-defined increment. public  void renew(IEntityLock lock, int duration)      Extends the expiration time of the lock by some service-defined increment. public static synchronized  IEntityLockService singleton()      Constructor Detail ReferenceEntityLockService public ReferenceEntityLockService() throws LockingException(Code) ReferenceEntityLockingService constructor comment. Method Detail convert public void convert(IEntityLock lock, int newType) throws LockingException(Code) Attempts to change the lock's lockType to newType. Parameters:   lock - IEntityLock Parameters:   newType - int exception:   org.jasig.portal.concurrency.LockingException - convert public void convert(IEntityLock lock, int newType, int newDuration) throws LockingException(Code) Attempts to change the lock's lockType to newType. Parameters:   lock - IEntityLock Parameters:   newType - int Parameters:   newDuration - int exception:   org.jasig.portal.concurrency.LockingException - existsInStore public boolean existsInStore(IEntityLock lock) throws LockingException(Code) Answer if this IEntityLock exists in the store. Parameters:   lock - boolean isValid public boolean isValid(IEntityLock lock) throws LockingException(Code) Answers if this IEntityLock represents a lock that is still good. To be valid, a lock must exist in the underlying store and be unexpired. Parameters:   lock - IEntityLock exception:   org.jasig.portal.concurrency.LockingException - newLock public IEntityLock newLock(Class entityType, String entityKey, int lockType, String owner) throws LockingException(Code) Returns a lock for the entity, lock type and owner if no conflicting locks exist. Parameters:   entityType - Parameters:   entityKey - Parameters:   lockType - Parameters:   owner - org.jasig.portal.groups.IEntityLock exception:   LockingException - newLock public IEntityLock newLock(Class entityType, String entityKey, int lockType, String owner, int durationSecs) throws LockingException(Code) Returns a lock for the entity, lock type and owner if no conflicting locks exist. Parameters:   entityType - Parameters:   entityKey - Parameters:   lockType - Parameters:   owner - Parameters:   durationSecs - org.jasig.portal.groups.IEntityLock exception:   LockingException - Retrieves potentially conflicting locks and checks them before addingthe new lock to the store. The add of a write lock will fail if any other lock exists for the entity. The add of a read lock will fail if a write lock exists for the entity. After we add a write lock we check the store a second time and roll back if any other lock has snuckin. I think this is slightly safer than depending on the db isolationlevel for transactional integrity. newLock public IEntityLock newLock(EntityIdentifier entityID, int lockType, String owner) throws LockingException(Code) Returns a lock for the entity, lock type and owner if no conflicting locks exist. org.jasig.portal.groups.IEntityLock Parameters:   entityID - org.jasig.portal.EntityIdentifier Parameters:   lockType - int Parameters:   owner - String exception:   LockingException - newLock public IEntityLock newLock(EntityIdentifier entityID, int lockType, String owner, int durationSecs) throws LockingException(Code) Returns a lock for the entity, lock type and owner if no conflicting locks exist. org.jasig.portal.groups.IEntityLock Parameters:   entityID - org.jasig.portal.EntityIdentifier Parameters:   lockType - int Parameters:   owner - String Parameters:   durationSecs - int exception:   LockingException - release public void release(IEntityLock lock) throws LockingException(Code) Releases the IEntityLock. Parameters:   lock - IEntityLock exception:   LockingException - renew public void renew(IEntityLock lock) throws LockingException(Code) Extends the expiration time of the lock by some service-defined increment. Parameters:   lock - IEntityLock exception:   LockingException - renew public void renew(IEntityLock lock, int duration) throws LockingException(Code) Extends the expiration time of the lock by some service-defined increment. Parameters:   lock - IEntityLock exception:   LockingException - singleton public static synchronized IEntityLockService singleton() throws LockingException(Code) org.jasig.portal.concurrency.locking.ReferenceEntityLockService Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)